High-stability double-track rewinding device based on decorative paper processing

Abstract

The invention relates to the technical field of decorative paper processing, and particularly discloses a high-stability double-track rewinding device based on decorative paper processing, which comprises an unwinding mechanism, a printing mechanism and a winding mechanism, the unwinding mechanism comprises a machine frame, and idler wheels are arranged at the bottom of the machine frame. The roll-over stand is rotationally connected to the rack, two rotating shafts used for supporting a raw material roll are rotationally connected to the roll-over stand, and the two rotating shafts are arranged in parallel at an interval; the base is arranged below the rack, and the base is provided with a sliding groove for the rolling wheels to slide; the linear driving part is used for driving the rack to slide in the axis direction of the rotating shaft; the detection assembly is used for detecting the offset of the raw material roll in the axis direction of the rotating shaft. The detection assembly can detect the offset of the raw material roll in the axis direction of the rotating shaft, and then the linear driving piece drives the rack to slide in the axis direction of the rotating shaft, so that the position of the raw material roll is adjusted, and the influence of the offset of the raw material roll on the printing effect is weakened.

Description

Technical Field

[0001] The present application relates to the technical field of decorative paper processing, and in particular to a high-stability dual-track rewinding device based on decorative paper processing. Background Art

[0002] Decorative paper is widely used in a variety of applications, including furniture and architectural decoration. The sophistication of its patterns and printing quality directly impact the product's overall aesthetics and market competitiveness. High-quality decorative paper elevates the quality of furniture and interior design, satisfying consumers' pursuit of personalized and high-quality living. Therefore, every step in the decorative paper processing process is crucial, with printing being a crucial step in determining the paper's appearance.

[0003] The decorative paper manufacturing process typically follows a sequential process of unwinding, printing, and rewinding. Unwinding typically involves placing the roll of raw material directly on a support and allowing it to unfold naturally. Printing involves printing patterns on the unwound raw material using a fixed-position printing device. Rewinding involves rewinding the printed decorative paper. During the unwinding process, the roll can shift along its axis. Since the printing device is fixed in place, this shifting roll can cause the printed pattern to shift toward the edges, severely affecting the printing quality and reducing the product's aesthetics. Summary of the Invention

[0004] In order to reduce the impact of the deviation of the raw material roll on the printing effect, the present application provides a high-stability dual-track rewinding device based on decorative paper processing.

[0005] The present application provides a high-stability dual-track rewinding device for decorative paper processing, which adopts the following technical solutions: A high-stability dual-track rewinding device for decorative paper processing includes an unwinding mechanism, a printing mechanism, and a rewinding mechanism arranged in sequence; the unwinding mechanism includes: A frame, wherein rollers are provided at the bottom of the frame, and four rollers are provided and respectively located at the four corners of the bottom of the frame; A turning frame is rotatably connected to the frame, and a rotating shaft for supporting the raw material roll is rotatably connected to the turning frame, wherein two rotating shafts are provided and are spaced apart and arranged in parallel; A base is arranged below the frame, and a sliding groove for the roller to slide is provided on the base; A linear drive member, used to drive the frame to slide along the axis of the rotating shaft; The detection component is used to detect the offset of the raw material roll along the axial direction of the rotating shaft.

[0006] By adopting the above technical solution, rollers are set at the bottom of the frame, and there are slide grooves and linear drive parts to achieve flexible adjustment of the position of the raw material roll. When the detection component detects that the raw material roll is offset, the linear drive part can be used to drive the frame to move the raw material roll, and timely position compensation can be performed to effectively reduce the impact of the raw material roll offset on the subsequent printing effect, thereby ensuring the accuracy of the printed pattern; the flip frame is rotatably connected to the frame, and two parallel rotating shafts are rotatably connected to it to support the raw material roll, which is convenient for quick replacement of the raw material roll and can reduce downtime.

[0007] Optionally, the turning frame and the rotating shaft are both located between the rollers on both sides of the frame.

[0008] By adopting the above technical solution, the turning frame and the rotating shaft are set between the rollers on both sides of the frame, which can make the center of gravity of the entire unwinding mechanism more stable, avoiding shaking or tipping during operation, improving the stability of equipment operation, reducing the deviation of raw material rolls or other failures caused by equipment shaking, and ensuring the smooth progress of the production process.

[0009] Optionally, the rotating shaft is detachably connected to the flip frame, and the flip frame is provided with a locking assembly for limiting axial movement of the rotating shaft.

[0010] By adopting the above technical solution, the rotating shaft can be detachably connected, which facilitates the replacement of the raw material roll; the locking component limits the axial movement of the rotating shaft, which can prevent the axial movement of the rotating shaft from causing the raw material roll to deviate.

[0011] Optionally, the detection component includes two deflection correction probes, which are spaced apart and arranged on both sides of the raw material strip after the raw material roll is unfolded.

[0012] By adopting the above technical solution, the offset of the raw material roll along the axial direction of the rotating shaft can be accurately detected, which is convenient for subsequent adjustments to reduce the impact of the raw material roll offset on the printing effect.

[0013] Optionally, a heating assembly is provided on the flip frame, and the heating assembly includes a fan, a heating element, a heating roller, a winding roller, a belt body and a rotating power component. The heating roller and the winding roller are both arranged along the axial direction of the rotating shaft and are rotatably connected to the flip frame. A cavity is provided inside the heating roller, and an exhaust port connected to the internal cavity is provided on the heating roller. The cavity inside the heating roller is connected to the output end of the fan. The heating element is provided at the output end of the fan. The belt body is fixedly connected between the heating roller and the winding roller. Air holes are provided on the belt body. The air holes on the belt body wound on the heating roller are arranged in an array, and the air holes are connected to the exhaust port. The rotating power component is used to drive the heating roller or the winding roller to rotate.

[0014] By adopting the above technical solution, the fan delivers heated air to the internal cavity of the heating roller. The hot air in the internal cavity of the heating roller is discharged from the exhaust port and blows on the raw material strip during the unwinding process, which can preheat the raw material strip and enable the raw material roll temperature to approach the heating temperature of the printing section in advance, reducing thermal stress changes during subsequent heating and avoiding deformation, wrinkling, or uneven stretching of the roll due to sudden heating. Decorative paper is prone to becoming brittle and breaking when suddenly heated. Preheating can also make the material tension more stable and enhance its flexibility, reducing the risk of breakage during high-speed unwinding. In low-temperature environments, plastic film or decorative paper is prone to static electricity and dust attraction. Gentle heating can reduce static electricity accumulation and prevent the attraction of impurities during printing. During the blowing process, the heating roller rotates continuously, causing the strip on the winding roller to be gradually wound onto the heating roller. On the one hand, the diameter of the strip wound on the heating roller gradually increases, while the diameter of the raw material roll on the rotating shaft gradually decreases during the unwinding process, so that the distance between the raw material roll and the strip remains relatively stable, and the discharged hot air does not weaken the preheating effect as the distance increases. On the other hand, the weight of the raw material roll gradually decreases during unwinding, while the weight of the strip on the heating roller gradually increases, which can achieve dynamic mass compensation, help balance the force on the turning frame, and reduce motor load fluctuations. The belt body is provided with air holes arranged in an array, so that the hot air can be blown evenly on the raw material belt, improving the uniformity of the preheating effect. At the same time, the setting of the air holes is also conducive to the circulation of hot air, preventing the hot air in the internal cavity of the heating roller from being blocked by the belt body and unable to be discharged, thereby ensuring the preheating effect; in addition, when the belt body rotates, the air holes open and close periodically, which can shake off attached impurities and achieve self-cleaning of the belt body.

[0015] Optionally, a guide ring is fixedly connected to the flip frame, and the guide ring is rotatably connected to the heating roller. A connecting pipe is provided at the output end of the fan, and the connecting pipe is a hose. The end of the connecting pipe away from the fan is fixedly connected to the guide ring.

[0016] By adopting the above technical solution, it is possible to avoid the connecting pipe from rotating when the heating roller rotates, prevent the connecting pipe from being continuously twisted, ensure the smooth progress of the hot air delivery process, and improve the reliability of the device operation.

[0017] Optionally, a baffle is fixedly connected to one side of the guide ring, and the baffle is located in the internal cavity of the heating roller. The baffle is used to block the exhaust port of the heating roller away from the rotating shaft.

[0018] By adopting the above technical solution, the hot air inside the heating roller can be discharged through the exhaust port close to the side of the rotating shaft, thereby ensuring the preheating effect, reducing the loss of hot air, and helping to reduce energy consumption.

[0019] Optionally, the roller is detachably connected to the frame.

[0020] By adopting the above technical solution, the roller can be detachably connected to the frame, which facilitates quick replacement and maintenance when the roller is worn or fails, reducing the downtime of the equipment and improving the availability and maintenance efficiency of the equipment.

[0021] Optionally, the frame is detachably connected to guide blocks on both sides of the raw material belt, and the distance between the two guide blocks is not less than the width of the raw material belt.

[0022] By adopting the above technical solution, the guide block can guide the raw material belt, further ensuring the stable transportation of the raw material belt; the spacing between the two guide blocks is adjustable, which can adapt to raw material rolls of different widths, thereby improving the versatility and flexibility of the equipment.

[0023] Optionally, the linear drive member is a linear motor.

[0024] By adopting the above technical solution and using a linear motor as a linear drive component, accurate and rapid position adjustment can be achieved, thereby improving the degree of automation and control accuracy of the equipment.

[0025] In summary, this application has the following beneficial technical effects: 1. The detection component can detect the offset of the raw material roll along the axis of the rotating shaft, and then drive the frame to slide along the axis of the rotating shaft through the linear drive component, thereby adjusting the position of the raw material roll and reducing the impact of the offset of the raw material roll on the printing effect.

[0026] 2. The hot air in the heating roller is discharged outward, which can preheat the raw material belt during the unwinding process, so that the temperature of the raw material roll is close to the heating temperature of the printing section in advance, reducing the thermal stress change during subsequent heating, and allowing the material to reach a stable state before entering the printing mechanism, avoiding deformation, wrinkling or uneven stretching of the roll due to sudden heating.

[0027] 3. When the heating roller rotates synchronously with the rotating shaft, the diameter of the belt part outside the heating roller gradually increases, and the diameter of the raw material roll outside the rotating shaft gradually decreases. Therefore, the distance between the raw material roll and the belt body will not change significantly, so that the hot air discharged from the heating roller can continuously and stably blow on the raw material roll, thereby ensuring the preheating effect.

[0028] 4. When the heating roller rotates synchronously with the rotating shaft, the weight of the belt increases to compensate for the weight reduction of the raw material roll, automatically balancing the load at both ends of the turning frame, which can extend the life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 This is a schematic structural diagram of the unwinding mechanism in Example 1 of the present application; Figure 3This is a schematic diagram of the structure of Example 1 of the present application with the frame and base hidden; Figure 4 yes Figure 3 A magnified schematic diagram of point A in the middle; Figure 5 This is a schematic structural diagram of the unwinding mechanism in Example 2 of the present application; Figure 6 is a cross-sectional view of Example 2 of the present application; Figure 7 yes Figure 6 A magnified schematic diagram of point B in the middle; Figure 8 is a cross-sectional view from another perspective of Example 2 of the present application; Figure 9 yes Figure 8 Enlarged schematic diagram of point C in the middle.

[0030] Figure markings: 1. unwinding mechanism; 11. frame; 111. roller; 12. turning frame; 121. mounting slot; 13. rotating shaft; 14. base; 141. slide slot; 15. correction probe; 2. locking assembly; 21. block; 211. accommodating slot; 22. connecting block; 23. locking rod; 231. limiting part; 232. screw part; 3. heating assembly; 31. fan; 32. heating element; 33. heating roller; 331. exhaust port; 34. winding roller; 35. belt body; 351. air vent; 36. rotating power part; 4. guide ring; 5. connecting pipe; 6. baffle; 7. printing mechanism; 8. drying mechanism; 9. traction mechanism; 10. winding mechanism; 16. raw material roll. DETAILED DESCRIPTION

[0031] The following combination Figures 1-9 This application is described in further detail.

[0032] Example 1 The embodiment of the present application discloses a high stability double track rewinding device based on decorative paper processing. Figure 1 The high-stability dual-track rewinding device for decorative paper processing includes an unwinding mechanism 1, a printing mechanism 7, a drying mechanism 8, a traction mechanism 9, and a rewinding mechanism 10, which are arranged in this order. The printing mechanism 7 includes a printing roller, which transfers ink to the stock web by contacting it, completing the printing process. The drying mechanism 8 includes a drying box, a fan and an electric heating tube installed in the drying box, which blow hot air onto the stock web to dry the ink on the stock web. The traction mechanism 9 includes a traction roller, which is driven by a servo motor and directly provides traction to control the travel speed of the stock web.

[0033] During the production of decorative paper, the raw material roll 16 is first unwound in the unwinding mechanism 1, and the unwound raw material strip is conveyed backward to the printing mechanism 7 for printing. After printing is completed, the raw material strip is conveyed to the drying mechanism 8, where the printed ink is dried by hot air. It is then conveyed backward and reeled into the reeling mechanism 10 after passing through the traction mechanism 9.

[0034] Reference Figure 2 The unwinding mechanism 1 includes a frame 11, a turning frame 12, a base 14, a linear drive, and a detection assembly. The frame 11 is arranged vertically; four rollers 111 are provided at the bottom of the frame 11, and are located at the four corners of the bottom of the frame 11. The rollers 111 are detachably connected to the frame 11 via bolts, facilitating subsequent replacement and maintenance. This detachable connection allows for quick removal and installation of new rollers 111 in the event of wear or failure, reducing equipment downtime.

[0035] Reference Figure 2 and Figure 3 The turning frame 12 is rotatably connected to the frame 11, with its axis of rotation being horizontal. A motor is mounted on the frame 11 to drive the turning frame 12. A rotating shaft 13, which supports the raw material roll 16, is rotatably connected to the turning frame 12, with its axis parallel to the turning axis of the turning frame 12. The rotating shaft 13 is an inflatable shaft. Inflating the airbag inside the rotating shaft 13 causes the slider on the rotating shaft 13 to slide radially outward, pressing against the inner wall of the center hole of the raw material roll 16, achieving a high-strength friction fixation.

[0036] Two rotating shafts 13 are provided, spaced apart and arranged in parallel. These two rotating shafts 13 are symmetrically positioned on either side of the turning frame 12. While the stock roll 16 on one rotating shaft 13 (shaft A) is being unwound, the stock roll 16 mounted on the other rotating shaft 13 (shaft B) serves as a backup. Once the stock roll 16 on shaft A is empty, the turning frame 12 can be rotated 180°, swapping the positions of shafts B and A. Unwinding can then be performed on shaft B. While shaft B is unwinding, a new stock roll 16 can be loaded onto shaft A. This allows the loading of a new stock roll 16 to occur simultaneously with the unwinding process, helping to ensure efficient operation.

[0037] The turning frame 12 and the rotating shaft 13 are both located between the rollers 111 on both sides of the frame 11, thereby making the center of gravity of the entire unwinding mechanism 1 more stable and avoiding shaking or tipping during operation.

[0038] Reference Figure 2 and Figure 4In order to facilitate the loading process of the raw material roll 16, the rotating shaft 13 can be detachably connected to the turning frame 12. The turning frame 12 is provided with a locking assembly 2 for limiting the axial movement of the rotating shaft 13. Both ends of the turning frame 12 are provided with mounting grooves 121 for supporting the ends of the rotating shaft 13, and the openings of the mounting grooves 121 are facing upward; each mounting groove 121 is provided with a locking assembly 2, and the locking assembly 2 includes a stopper 21, a connecting block 22 and a locking rod 23. The stopper 21 is hinged to the turning frame 12, and the hinge axis of the stopper 21 is parallel to the rotation axis of the turning frame 12; a semicircular notch is provided on one side of the stopper 21, so that when the stopper 21 is rotated to a horizontal state, the notch on the stopper 21 and the mounting groove 121 on the turning frame 12 are respectively located on the upper and lower sides of the rotating shaft 13, which can limit the axial movement of the rotating shaft 13.

[0039] The connecting block 22 is rotatably connected to the tilt frame 12, with its rotation axis parallel to the axis of rotation. The locking lever 23 includes a stopper 231 and a screw portion 232, which are coaxially fixedly connected. Both the stopper 231 and the screw portion 232 are cylindrical, with the stopper 231 having a larger diameter than the screw portion 232. The screw portion 232 is externally threaded, and the connecting block 22 has a threaded hole into which the screw portion 232 is threadedly connected. A receiving slot 211 for accommodating the screw portion 232 is defined at the end of the stopper 21, distal from the hinge axis. Under normal circumstances, the stopper 21 is in a horizontal state, and the screw portion 232 is vertically inserted into the accommodating groove 211. Under the action of the threaded connection, the bottom end of the limiting portion 231 can be pressed against the top wall of the stopper 21, thereby fixing the position of the stopper 21. The axial limitation of the rotating shaft 13 is achieved through the notch on the stopper 21 and the mounting groove 121 on the flip frame 12.

[0040] When it is necessary to remove the rotating shaft 13, the limiting part 231 is rotated about the vertical axis, and the limiting part 231 drives the screw part 232 to rotate, so that the limiting part 231 moves up and the limiting part 231 is separated from the abutment with the top wall of the stopper 21; then the limiting part 231 is rotated downward about the horizontal axis, and the limiting part 231 drives the screw part 232 to rotate downward, and then the stopper 21 is rotated upward about the horizontal axis, and the restriction on the end of the rotating shaft 13 is cancelled; after the locks at both ends of the rotating shaft 13 are released, the rotating shaft 13 is taken out from the mounting groove 121, and the empty raw material roll 16 on the rotating shaft 13 is taken out; a new raw material roll 16 is placed on the fork of the forklift on one side, and the rotating shaft 13 is loaded into the center hole of the new raw material roll 16, and then the air bag inside the rotating shaft 13 is inflated, so that the slider on the rotating shaft 13 slides radially outward under the action of the air bag and presses against the inner wall of the center hole of the raw material roll 16, fixing the raw material roll 16 on the rotating shaft 13. Then, the rotating shaft 13 is reinstalled between the two installation grooves 121 by a forklift, and then the stopper 21 is rotated and locked in a horizontal state by the locking rod 23, completing the loading process of the raw material roll 16.

[0041] Reference Figure 2 The base 14 is disposed below the frame 11 and is fixedly connected to the ground. A slot 141 is defined on the top wall of the base 14 for the roller 111 to slide. The length of the slot 141 is parallel to the axis of the rotating shaft 13. The slot 141 is shaped to match the roller 111. The roller 111 slides within the slot 141, guiding the frame 11 to slide axially along the rotating shaft 13. This adjusts the position of the stock roll 16 mounted on the frame 11, centered therein, and ensuring optimal printing results.

[0042] The linear drive element (not shown) is a linear motor, disposed between base 14 and frame 11. The linear motor's guide portion is fixedly connected to base 14, while its sliding portion is fixedly connected to frame 11. Thus, the linear motor drives frame 11 to slide horizontally, thereby adjusting the position of web spool 16. In other embodiments, the linear drive element may be a hydraulic cylinder, pneumatic cylinder, or electric push rod, as long as it can drive frame 11 to slide along the axis of rotation shaft 13.

[0043] The detection component is used to detect the offset of the raw material roll 16 along the axial direction of the rotating shaft 13. The detection component includes two deflection correction probes 15, which are detachably fixed to the frame 11 by bolts; the two deflection correction probes 15 are spaced apart on both sides of the raw material strip after the raw material roll 16 is unfolded, and the deflection correction probes 15 can detect changes in the edge position of the raw material strip by optical, ultrasonic or capacitive means. A controller is provided on the base 14, and the controller is electrically connected to the deflection correction probes 15 and the linear drive component respectively. When the raw material strip is running in the center, the edge positions detected by the deflection correction probes 15 on both sides are symmetrical, and the signals received by the deflection correction probes 15 are balanced (for example, the two probes output the same voltage or pulse signal); when the raw material strip is offset, the signals of the probes on both sides are different, so the offset is judged based on the signal difference between the two probes, and the linear motor is driven by the controller to adjust the position of the raw material roll 16 to ensure the accurate position of the printed pattern.

[0044] The components of the unwinding mechanism 1 operate as follows: The stock roll 16 is placed on the rotating shaft 13. As the stock roll 16 is unwound, the rotating shaft 13 rotates on the turning frame 12. When the detection assembly detects axial deviation of the stock roll 16, the linear drive element drives the frame 11 along the slide 141, thereby moving the stock roll 16 to compensate for the deviation. This combination allows the unwinding mechanism 1 to adjust the position of the stock roll 16 in real time, effectively reducing the impact of stock roll 16 deviation on subsequent printing results.

[0045] Furthermore, guide blocks are installed on both sides of the stock roll 16 on the frame 11. The spacing between the two guide blocks is no less than the width of the stock roll. These guide blocks guide the stock roll, further ensuring stable transport. The guide blocks are bolted to the frame 11, allowing for an adjustable spacing to accommodate stock rolls 16 of varying widths.

[0046] The implementation principle of Example 1 is as follows: the unwinding mechanism 1 unwinds the raw material roll 16, which is then printed by the printing mechanism 7. After printing, it is dried and then wound into the rewinding mechanism 10 after passing through the traction mechanism 9. During the unwinding process, the turning frame 12 is stationary relative to the frame 11, and the raw material roll 16 is placed on the rotating shaft 13. As the raw material roll 16 is unwound, the rotating shaft 13 rotates on the turning frame 12. When the raw material roll 16 deviates axially, the deviation of the raw material strip is detected by the correction probe 15. The controller then activates the linear drive, which drives the frame 11 along the slide 141, thereby moving the raw material roll 16 to compensate for the deviation. By adjusting the position of the raw material roll 16 in real time, the centering of the raw material roll 16 can be ensured, thereby ensuring the subsequent printing effect.

[0047] Example 2 Reference Figure 5 、 Figure 6 and Figure 7 The difference between this embodiment and embodiment 1 is that a heating assembly 3 is further provided on the turning frame 12 in this embodiment. There are two groups of heating assemblies 3, which are respectively located on both sides of the turning frame 12; each group of heating assemblies 3 corresponds to a raw material roll 16 on a rotating shaft 13. The heating assembly 3 includes a fan 31, a heating element 32, a heating roller 33, a winding roller 34, a belt body 35 and a rotating power element 36. The heating roller 33 and the winding roller 34 are both arranged along the axis of the rotating shaft 13, and the heating roller 33 and the winding roller 34 are both connected to the turning frame 12 to rotate around their own axes. A cavity is provided inside the heating roller 33, and an exhaust port 331 connected to the internal cavity is provided on the outer wall of the heating roller 33. A plurality of exhaust ports 331 are provided and arranged in an array. One end of the heating roller 33 is closed, while the other end is open. This open end of the heating roller 33 communicates with the output end of the fan 31. The heating element 32 includes a mounting housing and a heating wire fixedly connected to the mounting housing. The mounting housing is located outside the output end of the fan 31. Thus, the fan 31 can deliver hot air into the cavity within the heating roller 33. The hot air in the heating roller 33 is then discharged outward through the exhaust port 331, thereby preheating the raw material strip during the unwinding process. Preheating can further stabilize the tension of the raw material strip, increase its temperature, and improve its flexibility, facilitating subsequent printing and rewinding operations and helping to ensure subsequent printing quality.

[0048] The belt 35 is flexible and fixedly connected between the heating roller 33 and the winding roller 34. Air holes 351 are formed in the belt 35. When the belt 35 is wound around the outside of the heating roller 33, the air holes 351 are arranged in an array and communicate with the exhaust port 331. A rotating power member 36 is fixedly mounted on the turning frame 12. The rotating power member 36 is a motor. Two rotating power members 36 are provided. The output shaft of one rotating power member 36 is coaxially fixedly connected to the end of the heating roller 33 to drive the heating roller 33 to rotate. The output shaft of the other rotating power member 36 is coaxially fixedly connected to the end of the winding roller 34 to drive the winding roller 34 to rotate.

[0049] In the initial state, the strip 35 is wound around the take-up roller 34, and the raw material roll 16 on the rotating shaft 13 near the printing mechanism 7 has not yet been unwound. During the unwinding process, the rotating shaft 13 rotates, and at the same time, the heating roller 33 begins to rotate, causing the strip 35 on the take-up roller 34 to gradually be wound around the heating roller 33; during the rotation of the heating roller 33, the fan 31 can transport heated air into the cavity inside the heating roller 33, and then the hot air in the cavity inside the heating roller 33 is discharged outward through the exhaust port 331 and the air vent 351, blowing hot air onto the raw material roll 16 during the unwinding process, thereby preheating the raw material strip; after the raw material strip is preheated, it is then transported to the printing mechanism 7 for printing, and after printing is completed, it is dried and rewound. During the unwinding process, the heating roller 33 and the rotating shaft 13 rotate simultaneously. Therefore, as the raw material roll 16 on the rotating shaft 13 becomes smaller and smaller, the part of the belt body 35 wrapped around the heating roller 33 becomes larger and larger, which helps to keep the distance between the raw material roll 16 on the rotating shaft 13 and the belt body 35 on the heating roller 33 stable, thereby ensuring the preheating effect of the raw material belt.

[0050] After the unwinding process of the stock strip on this rotating shaft 13 (axis A) is completed, the turning frame 12 rotates 180°, swapping the positions of the two heating assemblies 3. In the heating assembly 3 corresponding to axis A, the take-up roller 34 rewinds, gradually winding the strip 35 from the heating roller 33 onto the take-up roller 34. After a portion of the strip 35 from the heating roller 33 has been transferred to the take-up roller 34, axis A can be removed and a new stock strip 16 loaded. Then, axis A with the stock strip 16 loaded can be reinstalled on the turning frame 12. This process reduces the difference in load bearing capacity between the two ends of the turning frame 12, ensuring uniform load distribution and ensuring the service life of the turning frame 12. Once the strip 35 from the heating roller 33 has been transferred to the take-up roller 34, the take-up roller 34 stops rotating, allowing the turning frame 12 to reverse and preheat the unwound stock strip again.

[0051] Reference Figure 8 and Figure 9 Furthermore, a connecting tube 5 is provided at the output end of the fan 31. The connecting tube 5 is a flexible hose. A guide ring 4 is fixedly connected to the turning frame 12, and a rotational connection is established between the guide ring 4 and the end of the heating roller 33. One end of the connecting tube 5 is fixedly connected to the output end of the fan 31, while the other end is fixedly connected to the guide ring 4 on the turning frame 12. Therefore, when the heating roller 33 rotates, it does not cause the connecting tube 5 to rotate, preventing it from being twisted and ensuring smooth hot air delivery through the connecting tube 5.

[0052] In addition, it should be noted that in this embodiment, when the positions of the two rotating shafts 13 are swapped, the turning frame 12 rotates alternately forward and reverse, i.e., the turning frame 12 first rotates 180° clockwise to complete the position swap of the two rotating shafts 13, moving the stored raw material roll 16 to the unwinding station, where unwinding, printing, and rewinding are then performed; then the turning frame 12 rotates 180° counterclockwise to complete the position swap of the two rotating shafts 13, moving the stored raw material roll 16 to the unwinding station, where unwinding, printing, and rewinding are then performed; and the cycle continues. Because the turning frame 12 rotates forward and reverse, rather than continuously in one direction, the connecting tube 5 is less likely to be significantly twisted as the turning frame 12 rotates, thereby ensuring normal connection of the connecting tube 5; the connecting wires of the motor disposed on the turning frame 12 are also less likely to be significantly twisted as the turning frame 12 rotates, thereby ensuring smooth power supply to the motor.

[0053] Reference Figure 7 Furthermore, a baffle 6 is fixedly connected to the side wall of one end of the guide ring 4. The baffle 6 is an arc-shaped arc that matches the interior of the heating roller 33. The baffle 6 is located in the internal cavity of the heating roller 33, and the baffle 6 is located on the side away from the rotating shaft 13. Therefore, the baffle 6 can block the exhaust port 331 on the side away from the rotating shaft 13, so that the hot air in the internal cavity of the heating roller 33 can be discharged through the exhaust port 331 on the side close to the rotating shaft 13.

[0054] The implementation principle of Example 2 is as follows: the rotating shaft 13 rotates to unfold the raw material roll 16. During the unfolding process of the raw material roll 16, the belt body 35 on the winding roller 34 corresponding to this rotating shaft 13 is gradually wound onto the heating roller 33. The heating roller 33 winds up the belt body 35 when rotating. At the same time, the hot air inside the heating roller 33 is discharged through the exhaust port 331 on the heating roller 33 and the air vent 351 on the belt body 35 to blow on the unfolded raw material belt, thereby preheating the raw material belt; the preheated raw material belt is transported to the printing mechanism 7 for printing processing, and then transported to the winding mechanism 10 for winding after printing is completed. The heating roller 33 and the rotating shaft 13 rotate at the same time, so the distance between the belt body 35 wound on the outside of the heating roller 33 and the raw material roll 16 on the outside of the rotating shaft 13 will not change significantly, thereby ensuring the consistency of preheating of each part of the raw material belt on the raw material roll 16, which helps to ensure the subsequent printing effect; at the same time, as the weight of the raw material roll 16 on the rotating shaft 13 decreases, the weight of the belt body 35 wound on the heating roller 33 increases, which helps to ensure that the turning frame 12 is evenly stressed and more stable.

[0055] When the stock roll 16 on this rotating shaft 13 (axis A) is emptied, the turning frame 12 rotates 180°, swapping the positions of the two rotating shafts 13. The stock roll 16 on axis B is now unwound, while the heating assembly 3 corresponding to axis B preheats the unwound stock strip. In the heating assembly 3 corresponding to axis A, the strip 35 on the heating roller 33 is gradually rewound onto the rewinding roller 34. When halfway rewound, axis A is removed and a new stock roll 16 is loaded, which is then loaded onto the turning frame 12. The heating roller 33 continues unwinding until the strip 35 on the heating roller 33 is completely rewound onto the rewinding roller 34, allowing the turning frame 12 to flip and preheat the stock roll 16 on axis A again.

[0056] The above are optional embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A high-stability double-track rewinding device based on decorative paper processing, characterized in that: It comprises an unwinding mechanism (1), a printing mechanism (7) and a rewinding mechanism (10) which are arranged in sequence; the unwinding mechanism (1) comprises: A frame (11), wherein rollers (111) are provided at the bottom of the frame (11), and four rollers (111) are provided and are respectively located at the four corners of the bottom of the frame (11); A turning frame (12) is rotatably connected to the frame (11), and a rotating shaft (13) for supporting the raw material roll (16) is rotatably connected to the turning frame (12), and two rotating shafts (13) are provided and are spaced apart and arranged in parallel; A base (14) is arranged below the frame (11), and a slide groove (141) for the roller (111) to slide is provided on the base (14); A linear drive member, used for driving the frame (11) to slide along the axis of the rotating shaft (13); The detection component is used to detect the offset of the raw material roll (16) along the axial direction of the rotating shaft (13).

2. The high-stability dual-track rewinding device for decorative paper processing according to claim 1, characterized in that: The turning frame (12) and the rotating shaft (13) are both located between the rollers (111) on both sides of the frame (11).

3. The high-stability dual-track rewinding device for decorative paper processing according to claim 1, characterized in that: The rotating shaft (13) is detachably connected to the turning frame (12), and the turning frame (12) is provided with a locking assembly (2) for limiting the axial movement of the rotating shaft (13).

4. The high-stability dual-track rewinding device for decorative paper processing according to claim 1, characterized in that: The detection component comprises two deflection correction probes (15), and the two deflection correction probes (15) are arranged at intervals on both sides of the raw material strip after the raw material roll (16) is unfolded.

5. The high-stability dual-track rewinding device for decorative paper processing according to claim 1, characterized in that: The turning frame (12) is provided with a heating assembly (3), and the heating assembly (3) includes a fan (31), a heating element (32), a heating roller (33), a winding roller (34), a belt body (35) and a rotating power element (36). The heating roller (33) and the winding roller (34) are both arranged along the axis direction of the rotating shaft (13) and are rotatably connected to the turning frame (12). A cavity is provided inside the heating roller (33), and an exhaust port (331) is provided on the heating roller (33) and is communicated with the internal cavity. The cavity of the belt (35) is communicated with the output end of the fan (31), the heating element (32) is arranged at the output end of the fan (31), the belt (35) is fixedly connected between the heating roller (33) and the winding roller (34), the belt (35) is provided with air holes (351), the air holes (351) on the belt (35) wound on the heating roller (33) are arranged in an array, and the air holes (351) are communicated with the exhaust port (331), and the rotating power element (36) is used to drive the heating roller (33) or the winding roller (34) to rotate.

6. The high-stability dual-track rewinding device for decorative paper processing according to claim 5, characterized in that: A guide ring (4) is fixedly connected to the turning frame (12), and the guide ring (4) is rotatably connected to the heating roller (33). A connecting pipe (5) is provided at the output end of the fan (31), and the connecting pipe (5) is a hose. The end of the connecting pipe (5) away from the fan (31) is fixedly connected to the guide ring (4).

7. The high-stability dual-track rewinding device for decorative paper processing according to claim 6, characterized in that: A baffle (6) is fixedly connected to one side of the guide ring (4), and the baffle (6) is located in the internal cavity of the heating roller (33). The baffle (6) is used to block the exhaust port (331) on the side of the heating roller (33) away from the rotating shaft (13).

8. The high-stability dual-track rewinding device for decorative paper processing according to claim 1, characterized in that: The roller (111) is detachably connected to the frame (11).

9. The high-stability dual-track rewinding device for decorative paper processing according to claim 1, characterized in that: The frame (11) is detachably connected to guide blocks on both sides of the raw material belt, and the distance between the two guide blocks is not less than the width of the raw material belt.

10. The high-stability dual-track rewinding device for decorative paper processing according to claim 1, characterized in that: The linear drive component is a linear motor.

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